<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    hello
</body>
<style>
    /* 背景图片添加 */
    
    body {
        background-color: rgb(238, 159, 159);
        background-image: url(11.jpeg);
        background-size: 100%;
        background-attachment: fixed;
    }
</style>
<OL>
    <li>
        <a></a>
    </li>
</OL>